Updated glibc packages that address several bugs are now available.
The GNU libc packages (known as glibc) contain the standard C libraries
used by applications.
2. Relevant releases/architectures:
Red Hat Linux 7.3 - i386
Red Hat Linux 9 - i386
Fedora Core 1 - i386
Fedora Core 2 - i386
3. Problem description:
Flaws in the catchsegv and glibcbug scripts were discovered. A local
user could utilize these flaws to overwrite files via a symlink attack
on temporary files. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2004-0968 and CVE-2004-1382
to these issues.
It was discovered that the use of LD_DEBUG and LD_SHOW_AUXV were not
restricted for a setuid program. A local user could utilize this flaw to
gain information, such as the list of symbols used by the program. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CVE-2004-1453 to this issue.
Users of glibc are advised to upgrade to these erratum packages that
remove the unecessary glibcbug script and contain backported patches to
correct these other issues.
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which
are not installed but included in the list will not be updated. Note
that you can also use wildcards (*.rpm) if your current directory *only*
contains the desired RPMs.
Please note that this update is also available via yum and apt. Many
people find this an easier way to apply updates. To use yum issue:
or to use apt:
apt-get update; apt-get upgrade
This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system. This assumes that you
have yum or apt-get configured for obtaining Fedora Legacy content.
Please visit http://www.fedoralegacy.org/docs for directions on how to
configure yum and apt-get.